hawkins



(No Model.) 2 Sheets-Sheet 1.

I. L. HAWKINS. DEVICE FOR OYERGOM'ING DEAD CENTERS AND FOR CONVERTINGMOTION. o; 298,199. Patented Ma 'b, 1 884.

I ATTORNEY (No Model.) 2 SheetsSheet 2.

1'. L. HAWKINS.

DEVICE FOR OVEROOMING DEAD CENTERS AND FOR CONVERTING MOTION.

No. 298,199. Patented May 6, 1884 II I INVENTOR ATTORNEY.

U ITED IRVING LEXVIS HAWKINS,

wrrrcn.

on WINDSOR, NEW YORK.

.SPBCIFICATION forming part of Letters Patent No. 298,199, dated May 6,1884.

Application filed February 20, 1884. (No model.)

.To an whom it may concern Be it known that I, I. L. HAWKINS, a citi--z'en of the United States, residing at Windsor,

ing power from rotary to reciprocal and reciprocal to rotary; and I dodeclare the following to be a full, clear, and exact description oftheinvention, such as will enable others skilled in the art, to which itappertains to make and use the same, reference being had totheaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention has for its object to provide a cheap and simple meanswhereby either a continuous rotary or a reciprocating motion may beobtained and imparted to various classes of machinery, and a rotaryreverse motion obtained at the same time from a single piston, thedead-center overcome, and the motion retarded or accelerated by theapplication of interchangeable wheels upon the same journals and piston.These obj cats I accomplish by the means shown and illustrated in theaccompanying drawings, in which Figure 1 is a representation of a planview of my invention with the fly or three-pointed cam wheel and pistonremoved. Fig. 2 is a v view of the piston detached, and Fig. 3 is aplace upon the forward journal.

view of the three pointed camwheel detached.

Referring by letter to the drawings, A indicates a frame, to which aresecured the axles a, on which the wheels are journaled.

B indicates the wheel, which I preferably This wheel has one of itsfaces provided with a waved or convoluted cam-groove, the center ofwhich represents in outline a five-pointed star having its radial armsslightly curved outwardly and lateral to a pointed terminal forming theinner walls of the groove in. which travel the two forward pins of thepiston. The reverse wheel 0, which I place upon the rear journal, hasthe outer walls of the groove oblique and semicircular alternately, asshown, with the.

arms of the star conforming in outline there power.

to, so as to have the walls of both parallel with relation to each otherfor the free and easy passage of the piston between them. D indicatesthe piston, which is provided with two elongated vertical slots, 12 b,for the passage of the wheel-j ournals, respectively. This piston isprovided with vertical pins 0 0 and c c, which project from the oppositesides thereof, to, respectively engage the grooves of the wheels, thetwo forward pins being on the same horizontal plane, while the two rearpins are arranged, respectively, on a line, or nearly so, with thelongitudinal walls of the rear elongated slot. By this arrangement ofthe pins upon the piston, when the wheels are placed upon the journals,as before described, and the said pins brought in engagement with thegrooves of the wheels from one side and power applied to the piston,both wheels will be driven in the same direction; but by removing thepiston and reversing it upon the wheels, so as to change the rear pinswith relation to the grooves of the rear wheels, the forward wheel willbe driven in the same rotary direction, while the rear one will take amay have a three-pointed cam-groove, andmay be placed upon the journalof one of the other wheels; and, if desired, a fourth wheel may be usedon the journal of the other wheel.

I do not wish to be understood, however, as confining myself to anynumber of wheels or points in their grooves, as a greater or less numbermay be employed, according to the nature of the machine to be operatedand the movement required.

This invention will be found particularly valuable in mowing-machinesfor driving the cutting apparatus, as a continuous reciprocating motionmay be obtained with but little It may also be successfully applied tolocomotive-engines for operating their drivewheels, and to various othermachines with a beneficial result.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with one or more camwheels, of a piston having pinsarranged upon opposite sides for engaging the cams, and In testimonywhereof I affix my signature in IO. elongated slots for the passage ofthe journals, presence of two witnesses. substantially as and for thepurposes specified.

2. The combination; with two or more cant IRVING LEIVIS HAWKINS. wheelshaving laterally-projecting journals, of a piston having pins forengaging the cams, XVitnesses: so arranged as to overcome thedead-oenter J. HENRY ROBERTS, and drive two or more wheels in oppositedi- J. S. CHASE.

rections, substantially as specified.

